OS: Debian Testing amd64 Package: libwebkit2gtk-4.0-37 (v2.32.1-2) (http://ftp2.fr.debian.org/debian/pool/main/w/webkit2gtk/libwebkit2gtk-4.0-37_2.32.1-2_amd64.deb) Command line used: /usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/MiniBrowser --enable-media-stream=True --enable-encrypted-media=True --enable-media-capabilities=True Go to: https://www.luigifab.fr/sintel-en-fr.webm (IPv6 required) Run in console (F12): document.querySelector('video').audioTracks[0] Result is: AudioTrack, ... label: "english" ... Run in console (F12): document.querySelector('video').audioTracks[1] Result is: AudioTrack, ... label: "français" ... Do the same with Chrome 91, Edge 91 and Opera 77 (after enabling Experimental Web Platform features in chrome://flags). The second result is always: AudioTrack, ... label: "français" ... With MiniBrowser, I can "fix" the label with: decodeURIComponent(escape(label))
Created attachment 431657 [details] Screenshot of the video with console results